(19)

(11)

EP 4 240 697 A1

(12)

(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 21805491.4 (22) Date of filing: 03.11.2021

(51) International Patent Classification (IPC):  C01G 53/00(2006.01) H01M 4/525(2010.01) (52) Cooperative Patent Classification (CPC): C01G 53/50; C01P 2002/54; C01P 2002/52; C01P 2002/85; C01P 2004/03; C01P 2004/51; C01P 2004/61; C01P 2006/40; H01M 4/485; H01M 2004/028; Y02E 60/10 (86) International application number: PCT/EP2021/080432 (87) International publication number: WO 2022/096473 (12.05.2022 Gazette 2022/19)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 04.11.2020 EP 20205588 (71) Applicants: Umicore 1000 Brussels (BE) Umicore Korea Ltd. Cheonan, Chungcheongnam-do 331-200 (KR)	(72) Inventors: KUMAKURA, Shinichi 2250 Olen (BE) KANG, JiHoon Cheonan Chungcheongnam-do 331-200 (KR) YANG, TaeHyeon Cheonan Chungcheongnam-do 331-200 (KR) PAULSEN, Jens Martin Cheonan Chungcheongnam-do 331-200 (KR) (74) Representative: Umicore RDI Patent Department  Watertorenstraat 33 2250 Olen 2250 Olen (BE)